The COVID-19 pandemic has stressed the importance of efficient and accommodating online educational experiences. In this contribution, we present work-in-progress on the development of a novel system for facilitation of small group online discussions using an avatar during video conferencing. Four groups of eighth and ninth grades' students interacted with the system, with and without avatar guidance. Our pilot study results show that students reported the avatar-guided learning to be more efficient, easier to follow, and inducing more engagement and active participation. Students also showed better understanding of the learned subject with the avatar guidance, as shown by the post-session questionnaires. This system shows promise in future online educational activities as a facilitator of discussions with K-12 students.